Restored tone mapping control of canvas preview

src/interface/desktop/WidgetPreviewCanvas.cpp

@@ -28,6 +28,16 @@ void WidgetPreviewCanvas::setCanvas(const Canvas *canvas)
     }
 }
 
+void WidgetPreviewCanvas::setToneMapping(const ColorProfile &profile)
+{
+    if (canvas)
+    {
+        canvas->getPreview()->setToneMapping(profile);
+        canvas->getPreview()->updateLive(this);
+        update();
+    }
+}
+
 void WidgetPreviewCanvas::paintEvent(QPaintEvent *)
 {
     QPainter painter(this);

src/interface/desktop/WidgetPreviewCanvas.h

@@ -9,8 +9,8 @@
 namespace paysages {
 namespace desktop {
 
-/*!
- * \brief Widget to display a live-updated preview of a Canvas software rendering.
+/**
+ * Widget to display a live-updated preview of a Canvas software rendering.
  */
 class WidgetPreviewCanvas : public QWidget, public CanvasLiveClient
 {
@@ -19,13 +19,18 @@ public:
     explicit WidgetPreviewCanvas(QWidget *parent = 0);
     virtual ~WidgetPreviewCanvas();
 
-    /*!
-     * \brief Set the canvas to watch and display, null to stop watching.
+    /**
+     * Set the canvas to watch and display, null to stop watching.
      *
      * This function must be called from the graphics thread.
      */
     void setCanvas(const Canvas *canvas);
 
+    /**
+     * Set the tone mapping to apply to pixel colors.
+     */
+    void setToneMapping(const ColorProfile &profile);
+
     virtual void paintEvent(QPaintEvent* event);
 
 protected:

src/interface/desktop/dialogrender.cpp

@@ -99,6 +99,8 @@ DialogRender::DialogRender(QWidget *parent, SoftwareCanvasRenderer* renderer):
     connect(_save_button, SIGNAL(clicked()), this, SLOT(saveRender()));
     connect(_tonemapping_control, SIGNAL(currentIndexChanged(int)), this, SLOT(toneMappingChanged()));
     connect(_exposure_control, SIGNAL(valueChanged(int)), this, SLOT(toneMappingChanged()));
+
+    toneMappingChanged();
 }
 
 DialogRender::~DialogRender()
@@ -166,7 +168,7 @@ void DialogRender::saveRender()
 void DialogRender::toneMappingChanged()
 {
     ColorProfile profile((ColorProfile::ToneMappingOperator)_tonemapping_control->currentIndex(), ((double)_exposure_control->value()) * 0.01);
-    //canvas_renderer->render_area->setToneMapping(profile);
+    canvas_preview->setToneMapping(profile);
 }
 
 void DialogRender::loadLastRender()

src/render/software/CanvasPreview.cpp

@@ -72,6 +72,12 @@ void CanvasPreview::setSize(int real_width, int real_height, int preview_width,
     reset();
 }
 
+void CanvasPreview::setToneMapping(const ColorProfile &profile)
+{
+    profile.copy(this->profile);
+    setAllDirty();
+}
+
 void CanvasPreview::reset()
 {
     lock->acquire();

src/render/software/CanvasPreview.h

@@ -21,6 +21,7 @@ public:
     const Color &getFinalPixel(int x, int y) const;
 
     void setSize(int real_width, int real_height, int preview_width, int preview_height);
+    void setToneMapping(const ColorProfile &profile);
     void reset();
 
     void initLive(CanvasLiveClient *client);